/// <summary>Snippet for Search</summary>
        public void SearchRequestObject()
        {
            // Snippet: Search(SearchRequest, CallSettings)
            // Create client
            SearchServiceClient searchServiceClient = SearchServiceClient.Create();
            // Initialize request argument(s)
            SearchRequest request = new SearchRequest
            {
                Placement          = "",
                BranchAsBranchName = BranchName.FromProjectLocationCatalogBranch("[PROJECT]", "[LOCATION]", "[CATALOG]", "[BRANCH]"),
                Query      = "",
                VisitorId  = "",
                UserInfo   = new UserInfo(),
                Offset     = 0,
                Filter     = "",
                OrderBy    = "",
                FacetSpecs =
                {
                    new SearchRequest.Types.FacetSpec(),
                },
                BoostSpec          = new SearchRequest.Types.BoostSpec(),
                QueryExpansionSpec = new SearchRequest.Types.QueryExpansionSpec(),
                VariantRollupKeys  = { "", },
                DynamicFacetSpec   = new SearchRequest.Types.DynamicFacetSpec(),
                PageCategories     = { "", },
                CanonicalFilter    = "",
            };
            // Make the request
            PagedEnumerable <SearchResponse, SearchResponse.Types.SearchResult> response = searchServiceClient.Search(request);

            // Iterate over all response items, lazily performing RPCs as required
            foreach (SearchResponse.Types.SearchResult item in response)
            {
                // Do something with each item
                Console.WriteLine(item);
            }

            // Or iterate over pages (of server-defined size), performing one RPC per page
            foreach (SearchResponse page in response.AsRawResponses())
            {
                // Do something with each page of items
                Console.WriteLine("A page of results:");
                foreach (SearchResponse.Types.SearchResult item in page)
                {
                    // Do something with each item
                    Console.WriteLine(item);
                }
            }

            // Or retrieve a single page of known size (unless it's the final page), performing as many RPCs as required
            int pageSize = 10;
            Page <SearchResponse.Types.SearchResult> singlePage = response.ReadPage(pageSize);

            // Do something with the page of items
            Console.WriteLine($"A page of {pageSize} results (unless it's the final page):");
            foreach (SearchResponse.Types.SearchResult item in singlePage)
            {
                // Do something with each item
                Console.WriteLine(item);
            }
            // Store the pageToken, for when the next page is required.
            string nextPageToken = singlePage.NextPageToken;
            // End snippet
        }